Epson Moverio Pro BT-2000, Руководство разработчика

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MOVERIO Pro Developer's Guide (Rev.1.4)
149
8.8.18. readGatt

Function
Start acquiring Characteristic Values/Characteristic Descriptors for the connected BLE
device.
Use format -2 when handling Characteristic Values/Characteristic Descriptors with a long
data length.

Format -1

Format -2

Parameter
Model name Explanation
char connectedHandle Connection handle
char handle Handle location for Characteristic Value
char offset Reading location for the value

Return value
Model Explanation
int BluetoothLeChipCode.SUCCESS: success
BluetoothLeChipCode.BaseError.INVALID_ADDR: invalid memory address
BluetoothLeChipCode.BaseError.INVALID_STATE: invalid status
BluetoothLeChipCode.BaseError.BUSY: system busy status
BluetoothLeChipCode.STKError.INVALID_CONN_HANDLE: invalid connection
handle

Usage method
To receive search results, you need to register the callback function in setGattCallback in
advance.
The following callback function sends a notification for search results.
BluetoothLeGattCallback.onReadGattResult
int readGatt(char connectedHandle, char handle);
int readGatt(char connectedHandle, char handle, char offset);